Removed default selected item on hub/section pages.
Last viewed button now updates on the hub page correctly
Merge branch 'UI_Overhaul' of github.com:hudl/hudl-win8 into UI_Overhaul
Selected season is remembered in app data.

Season is now handled in the hub viewmodel and doesn't rely on cached parameter.
Merge branch 'UI_Overhaul' of github.com:hudl/hudl-win8 into Thumbnails

Conflicts:
	HudlRT/Views/SectionView.xaml